By Matt Connor
Covered Call vs Cash-Secured Put
A covered call and a cash-secured put at one strike share a payoff shape. See both priced on the same SPY chain, and where the two really differ.
A covered call sells a call option against 100 shares you already own. A cash-secured put sells a put option while you hold enough cash to buy 100 shares at the strike. At the same strike and the same expiration the two carry the same payoff shape, and what separates them sits in the plumbing: which asset you post as collateral, and which direction an assignment moves you.
This page pins one real pair of contracts and tracks both trades from the day they opened, the SPY $720 call and the SPY $720 put, each expiring June 18, 2026. SPY is the ETF that tracks the S&P 500. It sat at $720 on May 1, so $720 was the at-the-money strike and both positions started level.
What each position is made of
The covered call has two parts, and a share owner already holds one:
- 100 shares of the stock.
- One call sold against them, which obligates the seller to deliver those shares at the strike through expiration.
The cash-secured put also has two parts:
- Cash set aside to buy 100 shares at the strike, $72,000 for a $720 strike.
- One put sold, which obligates the seller to buy 100 shares at the strike through expiration.
Each collects a premium up front that is kept whatever the market does next. Each caps the gain at a fixed number. Each leaves the position exposed below the strike. The contracts themselves are covered in call options and put options, and our covered call walkthrough traces the share side of this trade in detail.
Do a covered call and a cash-secured put have the same payoff?
At a matched strike and expiry, the payoff diagrams are the same shape. The relationship is put-call parity: shares plus a short call equal cash plus a short put, once dividends and the value of the collateral over the holding period are accounted for. One risk profile, two ways to enter it.
Marked prices settle the point better than a diagram. Below are both positions valued every session from May 1, stated as profit or loss per share against the day they opened.
The exact SQL behind every number
WITH entry AS (
SELECT avgIf(option_close, ticker = 'O:SPY260618C00720000') AS call0,
avgIf(option_close, ticker = 'O:SPY260618P00720000') AS put0,
avg(underlying_close) AS spy0
FROM global_markets.options_greeks
WHERE ticker IN ('O:SPY260618C00720000', 'O:SPY260618P00720000')
AND date = '2026-05-01'
AND implied_volatility > 0.02
)
SELECT g.date AS date,
round(avg(g.underlying_close) - any(entry.spy0) + any(entry.call0)
- avgIf(g.option_close, g.ticker = 'O:SPY260618C00720000'), 2) AS covered_call_pl,
round(any(entry.put0)
- avgIf(g.option_close, g.ticker = 'O:SPY260618P00720000'), 2) AS cash_secured_put_pl
FROM global_markets.options_greeks g, entry
WHERE g.ticker IN ('O:SPY260618C00720000', 'O:SPY260618P00720000')
AND g.date BETWEEN '2026-05-01' AND '2026-06-15'
AND g.implied_volatility > 0.02
GROUP BY g.date
HAVING countIf(g.ticker = 'O:SPY260618C00720000') > 0
AND countIf(g.ticker = 'O:SPY260618P00720000') > 0
ORDER BY g.dateThe two lines move together across all 29 sessions. They open at zero on the same day, climb together through May, sag together in the second week of June, and finish the window at $16.04 for the covered call against $11.73 for the cash-secured put.
The daylight between the lines is real and worth naming. A share holder receives dividends over the holding period and a cash holder does not, while cash collateral can earn interest that shares do not pay. Quote timing adds noise on top of that. None of it changes the shape of the bet.
What each strike pays
A short option's premium is set by where its strike sits against the current price. Here is the June 18 chain at $10 intervals around SPY's May 1 level, calls and puts side by side.
Read it as two mirror curves. At the $690 strike, well below the market, the call carried $40.27 of premium against the put's $6.82. At $770, well above it, the pair inverts: $0.98 for the call, $47.44 for the put. At the at-the-money $720 strike the two nearly meet, $17.49 against $14.41, which is parity showing up in live quotes.
Neither leg is usually sold at the money. A covered call is commonly written above the market, where the $740 call paid $7.22. A cash-secured put is commonly written below it, where the $700 put paid $8.66. The strike sets both the premium collected and the price at which the shares would change hands. Option delta puts a number on how likely each strike is to finish in the money, and the option greeks describe how the premium drifts day to day.
The same trade at four moments
The exact SQL behind every number
WITH entry AS (
SELECT avgIf(option_close, ticker = 'O:SPY260618C00720000') AS call0,
avgIf(option_close, ticker = 'O:SPY260618P00720000') AS put0,
avg(underlying_close) AS spy0
FROM global_markets.options_greeks
WHERE ticker IN ('O:SPY260618C00720000', 'O:SPY260618P00720000')
AND date = '2026-05-01'
AND implied_volatility > 0.02
)
SELECT multiIf(g.date = '2026-05-01', '1. Both trades opened (May 1)',
g.date = '2026-05-15', '2. Three weeks in (May 15)',
g.date = '2026-06-02', '3. SPY high (Jun 2)',
'4. SPY dip (Jun 10)') AS stage,
round(avg(g.underlying_close), 2) AS spy_price,
round(avg(g.underlying_close) - any(entry.spy0) + any(entry.call0)
- avgIf(g.option_close, g.ticker = 'O:SPY260618C00720000'), 2) AS covered_call_pl,
round(any(entry.put0)
- avgIf(g.option_close, g.ticker = 'O:SPY260618P00720000'), 2) AS cash_secured_put_pl,
round(abs((avg(g.underlying_close) - any(entry.spy0) + any(entry.call0)
- avgIf(g.option_close, g.ticker = 'O:SPY260618C00720000'))
- (any(entry.put0)
- avgIf(g.option_close, g.ticker = 'O:SPY260618P00720000'))), 2) AS gap_abs
FROM global_markets.options_greeks g, entry
WHERE g.ticker IN ('O:SPY260618C00720000', 'O:SPY260618P00720000')
AND g.date IN ('2026-05-01', '2026-05-15', '2026-06-02', '2026-06-10')
AND g.implied_volatility > 0.02
GROUP BY g.date
ORDER BY g.dateRead down the table. Both start at zero with SPY at $720. Three weeks in, SPY at $737.34, the covered call showed $7.32 per share against the put's $6.44, a difference of $0.88. At SPY's June 2 high of $759.63 both had run into their cap, $15.47 and $13.35. Through the June 10 session at $722.88 both gave back most of that gain together. The widest of the four readings separates them by $2.12 per share, over a stretch in which the underlying travelled roughly forty dollars.
Where the two really differ
Collateral. One position ties up 100 shares. The other ties up the strike in cash, $72,000 at a $720 strike, which the broker holds against the obligation for the life of the contract.
Assignment direction. A covered call that finishes in the money ends with the shares sold at the strike. A cash-secured put that finishes in the money ends with the shares bought at the strike. Opposite doors: one exits an equity position, the other enters one.
The starting point. A covered call presumes the shares are already there, or that they are bought first, with the spread and any commission on the stock leg paid up front. The put needs no share purchase to open.
Early assignment. US equity and ETF options are American style, so a short leg can be assigned before expiration. A short call is most often exercised early in the session before an ex-dividend date, the case walked through in ex-dividend dates and options. A short put is assigned early far less often, typically when it is deep in the money late in its life. When options expire sets the calendar both sit on.
Account permissions. Brokers grade options approval in levels, and the level required for covered calls is typically lower than the level required for selling puts. Retirement accounts commonly permit covered calls, while cash-secured puts vary by broker. These rules belong to the broker rather than the market, and they decide which of the two is even available in a given account.
Idle collateral. The put's cash sits in the account for the life of the trade. Where to park idle cash covers what that balance can earn while it waits.
When each one fits
Both trades express one view: a willingness to own the stock around the strike, paired with a capped gain above it. The choice tends to follow what the account already holds. A holder of 100 shares who wants income from them writes a call and keeps the shares unless the market takes them at the strike. Someone holding cash who would accept the shares at the strike sells the put and collects premium while waiting. Running one after the other on the same underlying, a put first and then calls on the assigned shares, is the loop traders call the wheel.
Neither is a hedge. Below the strike both positions carry full equity exposure, cushioned only by the premium collected. Protective puts and collars are the structures built for that job, and the mechanics of the short leg itself sit in buying and selling put options.
FAQ
Is a cash-secured put the same as a covered call?
At the same strike and expiration they carry the same payoff shape, which is put-call parity restated. The practical differences are collateral, shares against cash, and assignment direction. Over the window pinned above, the two per-share results stayed within $2.12 of each other at their widest.
Which collects more premium, a covered call or a cash-secured put?
At a matched strike the two premiums sit close together. On May 1, 2026 the $720 SPY call carried $17.49 against the same strike's put at $14.41. Premium gaps between the two strategies in practice come from selling them at different strikes, not from the option type.
What happens at expiration with each one?
A covered call finishing above the strike ends with the 100 shares sold at the strike, and the premium stays with the seller. Finishing at or below it, the call expires worthless and both the shares and the premium remain. A cash-secured put finishing below the strike ends with 100 shares bought at the strike out of the reserved cash, premium kept. At or above the strike the put expires worthless and the collateral is released.
Can you lose money on a covered call or a cash-secured put?
Yes, on the equity exposure in each. If the stock falls, the covered call writer's shares fall with it, and the put seller is obligated to buy at a strike above the market. The premium is a cushion, not a floor, and the loss on either can run to the full value of the position.
Do the two need the same options approval level?
Not usually. Most brokers place covered calls at a lower approval level than short puts, and retirement account rules differ again. Each also requires its collateral, shares or cash, to stay in place for the life of the contract.
Every price on this page is a stored query over the SPY June 18, 2026 chain. Open any panel's SQL and rerun it on the Strasmore terminal.